Envoy xDS syntax highlighting with https://github.com/redhat-developer/vscode-yaml Extension

bootstramp.yaml

# yaml-language-server: $schema=https://github.com/jcchavezs/envoy-config-schema/releases/download/v1.21.0/v3_Bootstrap.json
node:
  id: "something"
  cluster: "some-cluster"
  metadata:
    any: {}
    key: can
    be: used-here
  locality:
    zone: "europe-west4-a"
    sub_zone: "host-a"
  user_agent_name: grpc
static_resources:
  listeners:
    - name: foo
      address: { socket_address: { address: 127.0.0.1, port_value: 9000 } }
      filter_chains:
        - name: foo
          filters: [{}]